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Re: Changes in frame/window code

From: martin rudalics
Subject: Re: Changes in frame/window code
Date: Wed, 23 Jul 2014 17:26:24 +0200

>  > 2) It crashes with both Lucid and Motif (after a few attempts to toggle
>  >     with M-x horizontal-scroll-bar-mode and drag):
>  > #0  0x000000379220f62b in raise (sig=6) at 
>  > #1  0x000000000056bcbc in terminate_due_to_signal (sig=6, 
backtrace_limit=2147483647) at ../../trunk/src/emacs.c:387
>  > #2  0x00000000005f406d in die (msg=0x70acfe "VECTORLIKEP (a)", file=0x70acb8 
"../../trunk/src/lisp.h", line=866)
>  >      at ../../trunk/src/alloc.c:7102
>  > #3  0x0000000000566ba5 in XVECTOR (a=...) at ../../trunk/src/lisp.h:866
>  > #4  0x0000000000538106 in xt_action_hook (widget=0xd10060, client_data=0x0, 
action_name=0x138e2ec "EndScroll", event=0x7fffd5134100,
>  >      params=0x0, num_params=0x372f066290 <dummyAction.9840+16>) at 
> I can't reproduce that here - what precisely means "toggle with M-x
> horizontal-scroll-bar-mode and drag"?  Dragging the slider with the
> mouse?  Do you have to toggle more than once to make the bug happen?
> Do you have any interpretation for what happened?

I see now - xt_action_hook has a hardcoded

bar = XSCROLL_BAR (w->vertical_scroll_bar);

so you can trigger the bug any time by disabling vertical scrollbars and
dragging a horizontal slider.  I'll fix that.

Thanks again, martin

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